# git rev-parse -q --verify 5814bc2d4cc241c1a603fac2b5bf1bd4daa108fc^{commit}
5814bc2d4cc241c1a603fac2b5bf1bd4daa108fc
already have revision, skipping fetch
# git checkout -q -f -B kisskb 5814bc2d4cc241c1a603fac2b5bf1bd4daa108fc
# git clean -qxdf
# < git log -1
# commit 5814bc2d4cc241c1a603fac2b5bf1bd4daa108fc
# Merge: 42dc45e84452 5149303fdfe5
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Fri Dec 25 11:07:34 2020 -0800
# 
#     Merge tag 'perf-tools-2020-12-24' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux
#     
#     Pull more perf tools updates from Arnaldo Carvalho de Melo:
#     
#      - Refactor 'perf stat' per CPU/socket/die/thread aggregation fixing use
#        cases in ARM machines.
#     
#      - Fix memory leak when synthesizing SDT probes in 'perf probe'.
#     
#      - Update kernel header copies related to KVM, epol_pwait. msr-index and
#        powerpc and s390 syscall tables.
#     
#     * tag 'perf-tools-2020-12-24' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: (24 commits)
#       perf probe: Fix memory leak when synthesizing SDT probes
#       perf stat aggregation: Add separate thread member
#       perf stat aggregation: Add separate core member
#       perf stat aggregation: Add separate die member
#       perf stat aggregation: Add separate socket member
#       perf stat aggregation: Add separate node member
#       perf stat aggregation: Start using cpu_aggr_id in map
#       perf cpumap: Drop in cpu_aggr_map struct
#       perf cpumap: Add new map type for aggregation
#       perf stat: Replace aggregation ID with a struct
#       perf cpumap: Add new struct for cpu aggregation
#       perf cpumap: Use existing allocator to avoid using malloc
#       perf tests: Improve topology test to check all aggregation types
#       perf tools: Update s390's syscall.tbl copy from the kernel sources
#       perf tools: Update powerpc's syscall.tbl copy from the kernel sources
#       perf s390: Move syscall.tbl check into check-headers.sh
#       perf powerpc: Move syscall.tbl check to check-headers.sh
#       tools headers UAPI: Synch KVM's svm.h header with the kernel
#       tools kvm headers: Update KVM headers from the kernel sources
#       tools headers UAPI: Sync KVM's vmx.h header with the kernel sources
#       ...
# < /opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux-gcc --version
# < /opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux-ld --version
# < git log --format=%s --max-count=1 5814bc2d4cc241c1a603fac2b5bf1bd4daa108fc
# < make -s -j 48 ARCH=um O=/kisskb/build/linus_um-defconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 defconfig
# < make -s -j 48 ARCH=um O=/kisskb/build/linus_um-defconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 help
# make -s -j 48 ARCH=um O=/kisskb/build/linus_um-defconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 olddefconfig
# make -s -j 48 ARCH=um O=/kisskb/build/linus_um-defconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 
  LINK linux
Completed OK
# rm -rf /kisskb/build/linus_um-defconfig_um-x86_64
# Build took: 0:00:46.015938